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what is the difference bw water fall model, prototype model,spiral modal.

Asked by: Interview Candidate | Asked on: Sep 4th, 2006
Showing Answers 1 - 8 of 8 Answers

Answered On : Sep 14th, 2006

water fall Model:when the customer requirements are clear and complete.

Prototype Model:when the customer requirements are not clear  ambigeous or our project team is following this model with sample first.

Spiral Model:when the requirements  of the customer are enhausing.(Improving and Extending)

sudhakar kolla.

If you have doubts can ask me.


My Number:09819859346.

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sudhakar is right

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Answered On : Jan 19th, 2007

View all answers by srinivasracha

There is no such difference between these models, its depends up on the product or application.

Different companies uses different models. its it!


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Answered On : Feb 22nd, 2007

Hello Sudhakar

Very understandable anwer. Can you explain me with a small example?

Appriciate for your help


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Waterfall model is a rigid model and can easily be manageble but spiral model is notwaterfall model works well on smaller projects whereas spiral model woks on larger projects alsowaterfall model is a iterative process whereas spiral model is a partitioned in four quadrants it is also called meta model.

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Answered On : Sep 10th, 2010

View all answers by emmily

Waterfall Model : The waterfall model is a Sequential Software Development process in which progress is seen as flowing steadily downwards through the phases of Conception, Initiation, Analysis, Design, Construction, Testing and

Prototype Model: In Prototype Model, a Prototype is built to understand the requirements. This Prototype is developed based on the currently known requirements. Development of the Prototype obviously undergoes design, Coding and testing. But each of these phases is not done very formally or thoroughly. By using this prototype, the client can get an "actual feel" of the system, since the interactions with prototype can enable the client to better understand the requirements of the desired system.

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Answered On : Sep 10th, 2010

View all answers by emmily

The Spiral Model is a software development process combining which elements of both design and prototyping-in-stages, in an effort to combine advantages of top-down and bottom-up concepts. Also known as the Spiral lifecycle Model. This Model of development combines the features of the prototyping Modal and the Water fall Modal. The Spiral Modal is intended for large, expensive and complicated projects.

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Answered On : Sep 17th, 2010

View all answers by mail2vass

In water fall model, the customer requirements are very clear, so verification is enough, validation is not req. The water fall model and V-model are suitable for small type of projects.

In the V-model the customer req. are not clear so, both verification and validation is needed.

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Answered On : Nov 2nd, 2011

View all answers by mithr17

May I suggest wikipedia! You need to do a lot of reading.

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